939707278225 has 9 divisors (see below), whose sum is σ = 1165243035217. Its totient is φ = 751761945040.

The previous prime is 939707278207. The next prime is 939707278229. The reversal of 939707278225 is 522872707939.

The square root of 939707278225 is 969385.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 207286252369 + 732421025856 = 455287^2 + 855816^2 .

It is not a de Polignac number, because 939707278225 - 2²⁹ = 939170407313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (939707278229) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4749987 + ... + 4943863.

Almost surely, 2^939707278225 is an apocalyptic number.

939707278225 is the 969385-th square number.

939707278225 is the 484693-rd centered octagonal number.

It is an amenable number.

939707278225 is a deficient number, since it is larger than the sum of its proper divisors (225535756992).

939707278225 is an frugal number, since it uses more digits than its factorization.

939707278225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387764 (or 193882 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 61.

The spelling of 939707278225 in words is "nine hundred thirty-nine billion, seven hundred seven million, two hundred seventy-eight thousand, two hundred twenty-five".